[c-nsp] Policing switch ports on 1811

[The Father]

Hi everyone.  I'm trying to find a way to rate-limit or police to 3Mbps 
two of the switch ports on an 1811 router.  I have configured both FE 
ports as follows:

interface FastEthernet2
 switchport access vlan 10
 load-interval 30
!
interface FastEthernet9
 switchport access vlan 10
 load-interval 30

Now since these are basically layer 2 ports, I can't come up with a 
policy map or ACL to police them down to the 3Mbps value I want.  
Everything I try does not get matched.  The router doesn't seem to 
support aggregate policing either so I'm kinda stuck.  Are there any 
other options that would work?

FYI, I'm running 12.4(6)T7 Advanced IP Services code.

Thanks.

Jose